CN210800571U - Two-degree-of-freedom adjusting device - Google Patents

Abstract

The utility model provides a two degree of freedom adjusting device relates to precision measurement instrument technical field. The two-degree-of-freedom adjusting device comprises a top plate, a bottom plate and a supporting piece arranged between the top plate and the bottom plate, wherein the supporting piece is rotatably connected to the bottom plate and can rotate around a first axis perpendicular to the bottom plate, the top plate is rotatably connected to the supporting piece and can rotate around a second axis fixed relative to the supporting piece, and the first axis is not parallel to the second axis. The two-degree-of-freedom adjusting device is simple in structure and low in assembly cost.

Description

A two-degree-of-freedom adjustment device

technical field

The utility model relates to the technical field of precision measuring instruments, in particular to a two-degree-of-freedom adjustment device.

Background technique

The two-degree-of-freedom adjustment device can be used for the use or calibration of precision instruments such as autocollimators and laser rangefinders. The existing two-degree-of-freedom adjustment device needs to separately set a pitching and rotating platform on the base and superimpose a horizontally moving platform on the pitching and rotating platform in order to realize the platform's pitching and horizontal rotation. The structure is complicated and the assembly cost is high.

Utility model content

The purpose of the present invention includes providing a two-degree-of-freedom adjusting device with a simple structure and low assembly cost.

The embodiment of the present utility model is realized in this way:

The embodiment of the present invention provides a two-degree-of-freedom adjustment device, which includes a top plate, a bottom plate, and a support member disposed between the top plate and the bottom plate. The support member is rotatably connected to the bottom plate and can rotate around a first axis perpendicular to the bottom plate, and the top plate rotates It is connected to the support and can rotate about a second axis fixed relative to the support, the first axis and the second axis being non-parallel.

In an alternative embodiment, the first axis and the second axis are perpendicular to each other.

In an optional embodiment, two connecting blocks are provided at intervals along the extending direction of the second axis on the side of the top plate close to the bottom plate, the support piece is located between the two connecting blocks, and both ends of the support piece are rotatably connected to the two connecting blocks, respectively. A connection block is used to enable the top plate to rotate about the second axis relative to the support.

In an optional embodiment, the supporting member is rotatably connected to the bottom plate through a rotating member, the rotating member includes a rotating column located between two connecting blocks, the rotating column is fixedly connected to the supporting member, and the rotating column is rotatably connected to the bottom plate and can be relatively to the bottom plate. Rotate about the first axis.

In an optional embodiment, the rotating member includes a locking bolt, the rotating column is embedded in the bottom plate, and the locking bolt passes through the supporting member and is threadedly connected with the rotating column to fix the rotating column on the supporting member.

In an optional embodiment, the rotating column is provided with a first stop boss to prevent the rotating column from disengaging from the bottom plate from a direction close to the top plate.

In an optional embodiment, the two-degree-of-freedom adjustment device includes a first adjustment assembly, the first adjustment assembly includes a first adjustment rotating member, an adjustment block and a locking member, the adjustment block is connected to the top plate, and the bottom plate is provided with a first chute , the adjustment block is slidably matched with the first chute and can slide in the first preset direction in the first chute, and the first adjustment rotating member is threadedly matched with the adjustment block and penetrates the bottom plate to be able to adjust the adjustment block in the first chute The locking member is connected to the bottom plate, and the locking member is used to lock the position of the adjusting block in the first chute.

In an optional embodiment, the locking member includes a locking knob and a locking rod connected to the locking knob, a locking pad is provided on the side of the locking knob facing the bottom plate, and the locking rod extends into the first chute and Threaded with the adjustment block, the locking pad is used to prevent the locking piece from moving when the locking knob is tightened.

In an optional embodiment, the two-degree-of-freedom adjustment device includes a second adjustment assembly, the second adjustment assembly includes a second adjustment rotation member, the second adjustment rotation member passes through the top plate and is threadedly engaged with the top plate to be able to adjust the top plate around the second The top of the adjusting block is provided with a second chute extending along a second preset direction, the second preset direction is perpendicular to the first preset direction, and the second adjusting rotating member is slidably matched with the second chute.

In an optional embodiment, the second adjusting assembly includes a connecting piece that is detachably connected to the bottom of the second adjusting rotating piece, the connecting piece is provided with a second stopper boss, and the second stopper boss is connected to the second stopper boss. The sliding groove is slidably matched, and the second stop boss is used to prevent the second adjusting rotating member from being disconnected from the second sliding groove.

The beneficial effects of the embodiments of the present utility model include:

The two-degree-of-freedom adjustment device includes a top plate, a bottom plate, and a support member disposed between the top plate and the bottom plate, the support member is rotatably connected to the bottom plate and can rotate around a first axis perpendicular to the bottom plate, and the top plate is rotatably connected to the support member and can rotate relative to the bottom plate. The second axis fixed to the support rotates, and the first axis is not parallel to the second axis. The two-degree-of-freedom adjustment device arranges a support member between the top plate and the bottom plate, so that the support member can rotate relative to the bottom plate around a first axis that is perpendicular to the bottom plate, and the top plate can rotate relative to the support member around the second axis, and because the first axis and the bottom plate can rotate around the second axis. The second axis is not parallel, and the two-degree-of-freedom adjustment device can make the top plate rotate in two directions relative to the bottom plate with the help of the support, which is different from the existing stacking and setting a pitching rotation platform and a horizontal motion platform on the base to realize the relative relationship between the top plate and the bottom plate. Compared with the adjusting device in which the base can rotate with two degrees of freedom, the structure is simpler and the assembly cost is reduced.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the accompanying drawings that need to be used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention. Therefore, it should not be regarded as a limitation of the scope. For those of ordinary skill in the art, other related drawings can also be obtained from these drawings without any creative effort.

1 is a schematic structural diagram of a first viewing angle of a two-degree-of-freedom adjustment device in an embodiment of the present invention;

2 is a schematic structural diagram of a second viewing angle of a two-degree-of-freedom adjustment device in an embodiment of the present invention;

3 is a cross-sectional view of a two-degree-of-freedom adjustment device in an embodiment of the present utility model;

Fig. 4 is the exploded view of the rotating part in the embodiment of the utility model;

5 is a schematic structural diagram of a first adjustment assembly in an embodiment of the present invention;

6 is a schematic structural diagram of a locking member in an embodiment of the present invention;

7 is a schematic structural diagram of a second adjustment assembly in an embodiment of the present invention;

FIG. 8 is an exploded view of the second adjustment assembly in the embodiment of the present invention.

Icon: 100-two degrees of freedom adjustment device; 110-top plate; 112-connection block; 120-first axis; 122-second axis; 130-bottom plate; 134-first chute; 150-support; 152-rotation 153-lock bolt; 154-rotation column; 156-first stop boss; 157-pad column; 160-first adjustment assembly; 162-first adjustment rotating piece; 163-adjustment spring; 164-adjustment block; 165-second chute; 166-locking piece; 167-locking knob; 168-locking lever; 169-locking pad; 170-second adjusting assembly; 172-second adjusting rotating piece; 174- connecting piece; 175-second stop boss; 176-nut.

Detailed ways

In order to make the purposes, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. The embodiments described above are a part of the embodiments of the present invention, but not all of the embodiments. The components of the embodiments of the invention generally described and illustrated in the drawings herein may be arranged and designed in a variety of different configurations.

Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

It should be noted that like numerals and letters refer to like items in the following figures, so once an item is defined in one figure, it does not require further definition and explanation in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner" and "outer" The orientation or positional relationship indicated by etc. is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that is usually placed when the utility model product is used, only for the convenience of describing the present utility model and simplifying the description, not Indicates or implies that the referred device or element must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, the terms "first", "second", etc. are only used to differentiate the description and should not be construed to indicate or imply relative importance.

Furthermore, the terms "horizontal", "vertical", etc. do not imply that a component is required to be absolutely horizontal or overhang, but rather may be slightly inclined. For example, "horizontal" only means that its direction is more horizontal than "vertical", it does not mean that the structure must be completely horizontal, but can be slightly inclined.

In the description of the present utility model, it should also be noted that, unless otherwise expressly specified and limited, the terms "arrangement", "installation" and "connection" should be understood in a broad sense, for example, it may be a fixed connection or a Removable connection, or integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations.

Referring to FIG. 1 and FIG. 2 , the present embodiment provides a two-degree-of-freedom adjustment device 100 , which includes a top plate 110 , a bottom plate 130 , and a support member 150 disposed between the top plate 110 and the bottom plate 130 . The support member 150 is rotatably connected to the bottom plate 130 and can rotate around a first axis 120 perpendicular to the bottom plate 130 , and the top plate 110 is rotatably connected to the support member 150 and can rotate around a second axis 122 fixed relative to the support member 150 , the first axis 120 It is not parallel to the second axis 122 , so that the top plate 110 can rotate in two directions relative to the bottom plate 130 by means of the support member 150 .

In this embodiment, the first axis 120 and the second axis 122 are perpendicular to each other, and the second axis 122 is parallel to the bottom plate 130, so that when the bottom plate 130 is placed horizontally, the support member 150 can rotate horizontally relative to the bottom plate 130, and the top plate 110 can The top plate 110 can rotate relative to the support member 150 in pitch and pitch, and then the top plate 110 can realize the movement of two degrees of freedom in pitch rotation and horizontal rotation relative to the bottom plate 130 . In other embodiments, the second axis 122 may not be parallel to the bottom plate 130, that is, the first axis 120 and the second axis 122 may not be perpendicular to each other, and it is only necessary to ensure that the directions of the second axis 122 and the first axis 120 are different, so as to The top plate 110 is enabled to rotate with two different degrees of freedom.

The top plate 110 and the bottom plate 130 are both rectangular plates, and one side of the top plate 110 is rotatably connected to the support member 150 . Specifically, two connecting blocks 112 are provided at intervals along the extending direction of the second axis 122 on the side of the top plate 110 close to the bottom plate 130 . In this embodiment, the two connecting blocks 112 are detachably assembled on the bottom surface of the top plate 110 by screws. , in other embodiments, the connecting block 112 can be integrally formed with the top plate 110 .

The support member 150 is substantially in the shape of a rectangular parallelepiped, and the length direction of the support member 150 is parallel to the second axis 122 . The support member 150 is located between the two connection blocks 112 , and two ends of the support member 150 are rotatably connected to the two connection blocks 112 respectively, so that the top plate 110 can rotate relative to the support member 150 around the second axis 122 . In the present embodiment, the connection block 112 and the support member 150 are rotatably connected by a rotating shaft, and both ends of the support member 150 are in contact with the two connection blocks 112 respectively, so as to prevent the top plate 110 from shaking relative to the support member 150, so that when When the top plate 110 rotates horizontally relative to the bottom plate 130 , the supporting member 150 can be driven to rotate horizontally together.

Referring to FIG. 3 and FIG. 4 , the support member 150 is rotatably connected to the bottom plate 130 through the rotating member 152 . The rotating member 152 includes a rotating column 154 located between the two connecting blocks 112 . The rotating column 154 is fixedly connected to the supporting member 150 , and the rotating column 154 is rotatably connected to the base plate 130 and can rotate relative to the base plate 130 around the first axis 120 .

Specifically, to facilitate assembly, the rotating member 152 includes a locking bolt 153 , and the rotating column 154 is embedded in the bottom plate 130 . The locking bolt 153 passes through the support member 150 and is threadedly connected with the rotation column 154 to fix the rotation column 154 to the support member 150 . The bottom plate 130 is provided with a variable diameter through hole, and the cross section of the variable diameter through hole is I-shaped, that is, it is composed of a first small diameter section in the middle and a first large diameter section at both ends. The rotating column 154 is vertically arranged in the diameter-changing through hole, and the rotating column 154 is provided with a first stop boss 156 to prevent the rotating column 154 from separating from the bottom plate 130 from a direction close to the top plate 110 . At the position of the column 154 close to the bottom, the first stop boss 156 is stopped in the first large diameter section of the lower end of the variable diameter through hole. The middle part of the support member 150 is provided with a sinking groove, and the locking bolt 153 passes through the support member 150 from the sinking groove to be threadedly connected with the rotating column 154 embedded in the bottom plate 130 so that the supporting member 150 and the rotating column 154 are tightly connected . Therefore, when the top plate 110 rotates horizontally relative to the bottom plate 130 , the support member 150 drives the rotating column 154 to rotate horizontally relative to the bottom plate 130 , that is, the first axis 120 is the central axis of the rotating column 154 . In order to ensure the accuracy of rotation adjustment, a damping material can be provided on the surface of the rotating column 154 in contact with the through hole of the variable diameter, so as to control the frictional force on the rotating column 154 when rotating, so as to facilitate fine adjustment. In other embodiments, the rotating column 154 can also be directly fixedly connected to the bottom of the support member 150 and rotatably connected to the bottom plate 130, as long as it can be assembled.

In this embodiment, in order to prevent the support member 150 from directly contacting the upper surface of the bottom plate 130 and affecting the rotation adjustment, a cushion column 157 is embedded in the first large diameter section at the upper end of the variable diameter through hole, and the cushion column 157 supports the support member 150 And it is relatively fixed with the support member 150 . Specifically, the cushion column 157 includes a second small-diameter section and a second large-diameter section sequentially connected from top to bottom, the bottom of the second large-diameter section is embedded in the variable diameter through hole, and the top of the second small-diameter section is embedded in The bottom of the support 150 . The support post 157 pushes up the support member 150 so that the support member 150 does not directly contact with the bottom plate 130 . The locking bolt 153 penetrates the pad post 157 downward from the support member 150 and is then threadedly connected to the rotation post 154, thereby locking the support member 150, the pad post 157 and the rotation post 154 together. When the top plate 110 is leveled around the first axis 120 During the rotation, the support member 150 , the cushion column 157 and the rotating column 154 rotate horizontally relative to the base plate 130 together. Corresponding damping material can also be provided on the surface of the pad post 157 in contact with the bottom plate 130 to ensure the adjustment accuracy. It can be understood that in other embodiments, the spacer 157 may not be provided, as long as the adjustment accuracy of the corresponding horizontal rotation can be achieved.

Referring to FIG. 5 , the two-degree-of-freedom adjusting device 100 includes a first adjusting component 160 , and the first adjusting component 160 includes a first adjusting rotating member 162 , an adjusting block 164 and a locking member 166 . The first adjusting rotary member 162 is a screw or a screw rod with a knob. The bottom plate 130 is provided with a first sliding groove 134 , and the first sliding groove 134 is located at one end of the bottom plate 130 away from the diameter-changing through hole. The adjusting block 164 is slidably matched with the first sliding groove 134 and can slide in the first predetermined direction (the direction ab in the figure) in the first sliding groove 134 . In this embodiment, the first predetermined direction is parallel to the extending direction of the second axis 122 . The first adjusting rotary member 162 is fixed relative to the bottom plate 130 in the first predetermined direction. The adjusting block 164 is connected to the top plate 110, and the connection position is located at the top plate 110, so that when the adjusting block 164 moves in the first chute 134, it can drive the side of the top plate 110 away from the connecting block 112 to move accordingly, so that the top plate 110 can be moved accordingly. Rotation about the first axis 120 . The first adjusting rotary member 162 passes through the bottom plate 130 along the first preset direction and reaches the first chute 134 . The first adjusting rotary member 162 is threaded with the adjusting block 164 and passes through the bottom plate 130 so as to be able to adjust the adjusting block 164 in the first The position in the chute 134 is adjusted to adjust the rotation angle of the top plate 110 around the first axis 120 , that is, by adjusting the knob of the first adjusting rotary member 162 to adjust the displacement of the adjustment block 164 , thereby adjusting the horizontal rotation angle of the top plate 110 . In this embodiment, an adjusting spring 163 for eliminating the return clearance is sleeved on the first adjusting rotating member 162 . One end of the adjusting spring 163 is in contact with the bottom plate 130 , and the other end is in contact with the adjusting block 164 .

Referring to FIG. 6 , the locking member 166 is connected to the bottom plate 130 , and the locking member 166 is used for locking the position of the adjusting block 164 in the first sliding groove 134 . In this embodiment, the locking member 166 includes a locking knob 167 and a locking rod 168 connected to the locking knob 167. A locking pad 169 is provided on the side of the locking knob 167 facing the bottom plate 130, and the locking rod 168 is along the The second predetermined direction (shown in the cd direction) extends, and the second predetermined direction is perpendicular to the first predetermined direction. Both the first preset direction and the second preset direction are perpendicular to the extending direction of the first axis 120 . The locking rod 168 extends into the first sliding slot 134 and is threadedly connected with the adjusting block 164. The locking pad 169 is used to be pressed between the locking knob 167 and the side wall of the bottom plate 130 when the locking knob 167 is tightened so as to The locking member 166 is prevented from moving in the first preset direction by frictional force, so that the position of the adjusting block 164 in the first sliding groove 134 can be locked. In addition, when the position of the adjusting block 164 is adjusted, a set screw can be installed on the bottom plate 130 to lock the locking rod 168 to prevent it from rotating.

7 and 8 , the two-degree-of-freedom adjustment device 100 includes a second adjustment assembly 170 , and the second adjustment assembly 170 includes a second adjustment rotating member 172 , which is a screw with a knob. The second adjusting rotating member 172 passes through the top plate 110 and is screwed with the top plate 110 to be able to adjust the rotation angle of the top plate 110 around the second axis 122 , that is, to adjust the pitch rotation angle of the top plate 110 . The top of the adjusting block 164 is provided with a second sliding groove 165 extending along the second preset direction, and the second adjusting rotating member 172 is slidably matched with the second sliding groove 165 . When the top plate 110 rotates horizontally around the first axis 120, the second sliding groove 165 can allow the side of the top plate 110 away from the connecting block 112 to move in a second preset direction to approach or move away from the support 150, so as to avoid hindering the horizontal rotation of the top plate 110 .

In this embodiment, the second adjusting assembly 170 includes a connecting piece 174 that is detachably connected to the bottom of the second adjusting rotating piece 172 to facilitate assembly. The connecting piece 174 is cylindrical to avoid interfering with the rotational adjustment of the second adjustment assembly 170 . The connecting member 174 is provided with a second stopper boss 175, the second stopper boss 175 is slidably matched with the second chute 165, and the second stopper boss 175 is used to prevent the second adjustment rotating member 172 from being connected to the second chute. 165 Disconnect. A nut 176 may be sleeved at the position of the second adjusting rotary member 172 above the top plate 110 to achieve a vertical limit. In other embodiments, the second adjusting rotating member 172 can be directly slidably matched with the second sliding groove 165 without providing the connecting member 174, and it is only necessary to ensure that it can be assembled normally.

The working principle and working process of the two-degree-of-freedom adjustment device 100 are as follows:

When the bottom plate 130 is placed horizontally, the horizontal rotation angle of the top plate 110 is adjusted by the first adjusting component 160 . Rotating the first adjusting rotating member 162 can drive the adjusting block 164 to move in the first predetermined direction (the direction ab in the figure) in the first chute 134, thereby driving the second adjusting component 170 to move, and then driving the top plate 110 to move. move accordingly. At the same time, since the second adjusting assembly 170 is slidably connected to the second sliding groove 165 of the adjusting block 164, the side of the top plate 110 away from the connecting block 112 can approach or move away from the support along the second preset direction (direction cd in the figure) 150 , to ensure that the top plate 110 can normally rotate horizontally around the first axis 120 , and the top plate 110 drives the support 150 to rotate relative to the bottom plate 130 around the first axis 120 . The second adjusting assembly 170 is threadedly engaged with the top plate 110 , and both ends of the support member 150 are rotatably connected to the connecting blocks 112 of the top plate 110 , so that the top plate 110 can be rotated relative to the bottom plate 130 around the second axis 122 by rotating the second adjusting assembly 170 . That is, the pitch rotation angle of the top plate 110 is adjusted.

The two-degree-of-freedom adjustment device 100 realizes the adjustment of the top plate 110 relative to the bottom plate 130 in two degrees of freedom by arranging between the top plate 110 and the bottom plate 130 a support member 150 that is rotatably connected to the two. The support member 150 can rotate horizontally around the first axis 120 relative to the bottom plate 130 , and the top plate 110 can pitch and rotate relative to the support member 150 around the second axis 122 .

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. For those skilled in the art, the present utility model may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims (10)

1. A two degree-of-freedom adjustment device comprising a top plate, a bottom plate, and a support disposed between the top plate and the bottom plate, the support being pivotally connected to the bottom plate and being capable of pivoting about a first axis perpendicular to the bottom plate, the top plate being pivotally connected to the support and being capable of pivoting about a second axis fixed relative to the support, the first axis being non-parallel to the second axis.

2. The two degree-of-freedom adjustment device of claim 1, wherein the first axis and the second axis are perpendicular to each other.

3. The two-degree-of-freedom adjustment device according to claim 1, wherein two connection blocks are provided at intervals along the extension direction of the second axis on one side of the top plate close to the bottom plate, the support member is located between the two connection blocks, and two ends of the support member are respectively rotatably connected to the two connection blocks, so that the top plate can rotate around the second axis relative to the support member.

4. The two degree-of-freedom adjustment device of claim 3, wherein the support member is rotatably coupled to the base plate via a rotating member, the rotating member including a rotating post located between the two connecting blocks, the rotating post being fixedly coupled to the support member, the rotating post being rotatably coupled to the base plate and being rotatable relative to the base plate about the first axis.

5. The two degree-of-freedom adjustment device of claim 4, wherein the rotation member includes a locking bolt, the rotation post is embedded in the base plate, and the locking bolt passes through the support member and is threadedly coupled with the rotation post to fix the rotation post to the support member.

6. The two degree-of-freedom adjustment device of claim 4, wherein the rotation post is provided with a first stop boss to prevent the rotation post from being disengaged from the base plate from a direction approaching the top plate.

7. The two degree-of-freedom adjustment device according to claim 1, comprising a first adjustment assembly including a first adjustment rotating member, an adjustment block and a locking member, wherein the adjustment block is connected to the top plate, the bottom plate is provided with a first sliding slot, the adjustment block is in sliding fit with the first sliding slot and can slide in the first sliding slot along a first preset direction, and the first adjustment rotating member is in threaded fit with the adjustment block and penetrates out of the bottom plate to be able to adjust the position of the adjustment block in the first sliding slot, thereby adjusting the angle of rotation of the top plate around the first axis; the retaining member is connected to the bottom plate, the retaining member is used for locking the position of regulating block in the first spout.

8. The two degree-of-freedom adjustment device according to claim 7, wherein the locking member includes a locking knob and a locking lever connected to the locking knob, a locking pad is provided on a side of the locking knob facing the base plate, the locking lever extends into the first sliding groove and is in threaded connection with the adjustment block, and the locking pad is used for preventing the locking member from moving when the locking knob is screwed.

9. The two degree-of-freedom adjustment device according to claim 7, comprising a second adjustment assembly including a second adjustment rotating member passing through and threadedly engaged with the top plate to enable adjustment of the angle of rotation of the top plate about the second axis, the top of the adjustment block being provided with a second sliding slot extending in a second predetermined direction perpendicular to the first predetermined direction, the second adjustment rotating member being slidably engaged with the second sliding slot.

10. The two degree-of-freedom adjustment device of claim 9, wherein the second adjustment assembly includes a connector detachably connected to a bottom of the second adjustment rotator, the connector being provided with a second stop boss slidably engaged with the second runner, the second stop boss being configured to prevent the second adjustment rotator from being disconnected from the second runner.

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